抽象地从响应中获取标题 [英] Getting headers from a response in volley
问题描述
我正在使用Volley,我想向服务器发出请求,该服务器在可分层中返回一个JSON(我可以在Web浏览器中看到它)。我的问题是,服务器也返回我的头信息,我需要在我的应用程序中,但我无法从请求中获取头。
I am working with Volley, I want to make request to a server which returns me a JSON in the "vissible layer" (I can see it in the web browser). My problem is that the server also returns my in the headers information that I need to get in my App, but I am not able to get the headers from the request.
我搜索了很长时间,但我还没有发现任何有用的东西(只有将数据添加到请求标题,但没有从头文件的响应中获取数据)
I have searched a long time but I havent found anything usefull (Onlye adding data to the request Header, but not getting data from the header´s response)
任何人都知道如何执行那个?
Anyone knows how to implement that?
推荐答案
要获取标题,您需要覆盖 parseNetworkResponse()
in您的请求。
To get the headers you need to override parseNetworkResponse()
in your request.
例如 JsonObjectRequest
:
public class MetaRequest extends JsonObjectRequest {
public MetaRequest(int method, String url, JSONObject jsonRequest, Response.Listener
<JSONObject> listener, Response.ErrorListener errorListener) {
super(method, url, jsonRequest, listener, errorListener);
}
public MetaRequest(String url, JSONObject jsonRequest, Response.Listener<JSONObject>
listener, Response.ErrorListener errorListener) {
super(url, jsonRequest, listener, errorListener);
}
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
JSONObject jsonResponse = new JSONObject(jsonString);
jsonResponse.put("headers", new JSONObject(response.headers));
return Response.success(jsonResponse,
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
}
这篇关于抽象地从响应中获取标题的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!